If you have a 40' motorhome then you probably will prefer 50 amp service. I would suggest sites 15 or 16 which are on the south end of the beach campground. Both are back-in sites. On the north end of the beach campground there are sites 37 and 40 which are also back-in and 50 amp. All the other sites are 30 amp. You will easily fit in any of these 50 amp sites....